A wee touch of tartan

Off to a wedding in England over the weekend and there's a significant Scottish presence, so it's definitely kilt time...

So I've just spent an hour or so making sure I've got all the assorted paraphernalia required out and, just as importantly, that it all fits...

Question is, do I chance taking the Sgian Dubh? It'll go in hold luggage for the flight, but not entirely sure about wandering around SE England with a knife...